[test] update shardformer tests

tests/test_shardformer/test_model/_utils.py

@@ -12,8 +12,8 @@ def build_model(model_fn, enable_fused_normalization=True, enable_tensor_paralle
                                enable_tensor_parallelism=enable_tensor_parallelism)
     model_copy = copy.deepcopy(org_model)
     shard_former = ShardFormer(shard_config=shard_config)
-    sharded_model = shard_former.optimize(model_copy).cuda()
-    return org_model, sharded_model
+    sharded_model, shared_params = shard_former.optimize(model_copy)
+    return org_model, sharded_model.cuda()
 
 
 def run_forward(original_model, sharded_model, data_gen_fn, output_transform_fn, loss_fn):

tests/test_shardformer/test_with_torch_ddp.py

@@ -44,7 +44,7 @@ def check_shardformer_with_ddp(rank, world_size, port):
     for name, (model_fn, data_gen_fn, output_transform_fn, loss_fn, _) in sub_model_zoo.items():
         # create and shard model
         model = model_fn().cuda()
-        sharded_model = shardformer.optimize(model)
+        sharded_model, _ = shardformer.optimize(model)
 
         # add ddp
         sharded_ddp_model = DDP(sharded_model, process_group=dp_process_group)